R (symbol)
This much-used symbol has many meanings in medicine. They include: {{}}Respiration: a nurse's note of "R20" is shorthand for 20 respirations (breaths) per minute. Right: A doctor's note of a burn on the "R digit 5" places the burn on the right little finger or toe. Roentgen, an international unit of X-radiation or gamma-radiation. In chemistry, a radical. On a prescription, R (or Rx), recipe, which is Latin for "to take".

Medical dictionary. 2011.

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  • R (маршрут метро) — Broadway Local Север Forest Hills or 36th Street (поздней ночью) Юг Bay Ridge …   Википедия

  • R-value — R val•ue [[t]ˈɑrˌvæl yu[/t]] n. bui a measure of the resistance of an insulating or building material to heat flow, expressed as R 11, R 20, and so on; the higher the number, the greater the resistance to heat flow Compare U value • Etymology:… …   From formal English to slang

  • R — Abbreviation or symbol for electrical resistance; radical (usually an alkyl or aryl group, e.g., ROH is an alcohol, RNH2 an amine); Réaumur; respiration; respiratory exchange ratio; roentgen; the remainder of a …   Medical dictionary

  • r — Abbreviation for roentgen; radius. 1. Symbol for correlation coefficient. 2. Abbreviation for racemic, occasionally used in naming compounds in place of the more common dl or (±), as “r alanine” (more often as the prefix rac ). * * * Behnken… …   Medical dictionary

  • R-value — /ahr val yooh/, n. a measure of the resistance of an insulating or building material to heat flow, expressed as R 11, R 20, and so on; the higher the number, the greater the resistance to heat flow. Cf. U value. [1945 50; R, symbol for… …   Universalium

  • R (disambiguation) — R is the eighteenth letter of the Latin alphabet. It may also refer to:* R (programming language), an environment for statistical computing and graphics * IBM System R, an IBM database system * R (complexity), the set of all recursive languages * …   Wikipedia

  • R* — or R* can mean the following:*Rockstar Games uses R* as its symbol* R* , the symbol for an ecological concept developed by G. David Tilman to explain the minimum concentration to which an organism can reduce a resource. R is the symbol he uses… …   Wikipedia

  • R (Begriffsklärung) — R bezeichnet: R und r, den 18. Buchstaben des lateinischen Alphabets r., die Abkürzung für rechts R, eine veraltete Bezeichnung für den ersten Außenleiter in der Elektrotechnik R, eine Programmiersprache und Software für statistische Berechnungen …   Deutsch Wikipedia

  • r — 〈Math.; Zeichen für〉 Radius * * * r: 1) Formelzeichen für Radius, Atomabstand, Stoffmengenverhältnis; 2) [Abk. für Referenzsubstituent]: in der Stereochemie der org. Verb. ein dem Lokanten mit Bindestrich kursiv vorangestellter Stereodeskriptor,… …   Universal-Lexikon

  • R — 1. 〈Abk. für〉 1.1 Rand2 1.2 〈in Bibliotheken, Münzkatalogen u. Ä.〉 Rarus 2. 〈auf der Rückseite von Uhren; Abk. für frz.〉 retard (zurück) (zeigt an, dass man eine Schraube od. einen Hebel in der bezeichneten Richtung verstellen muss, um ein… …   Universal-Lexikon

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